Probing the local interstellar medium

Details Probing the local interstellar medium Probing the local interstellar medium

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.317..702s&link_type=abstract

Nature (ISSN 0028-0836), vol. 317, Oct. 24, 1985, p. 702, 703. NASA-supported research.

Computer Science

27

Galactic Cosmic Rays, Heliosphere, Interstellar Gas, Plasma Probes, Solar Wind, Interstellar Magnetic Fields, Subsonic Flow, Voyager Project

Scientific paper

Kurth et al., using Voyager radio data and a simple model of solar-wind expansion, have inferred the location of the heliospheric shock to be 46 AU. Additional consideration of their data and the use of a modern model of the distant solar wind allow the authors to reduce this estimate to as little as 30 AU. The shock occurs where the solar wind pressure falls to that of the local interstellar medium (LISM). This value for the distance to the shock is less than half that usually expected, indicating that the parameters thought to describe the LISM differ from those commonly assumed. By using a model of solar-wind expansion the authors deduce a range of parameters for the LISM that predicts a comparable shock location.

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